Engineering Physics meets the requirements of the course curriculum in introductory physics for the first-year students of all branches of engineering. This text emphasizes the basic concepts of physics. The book also contains numerous solved problems, short and descriptive type questions and exercise problems to help students assess their progress and familiarize them with the types of questions set in examinations. The new edition of this book now includes new chapters on Elasticity, Acoustics and Thermal Physics. Besides this, new sections on non-linear optics, crystal growth, and direct and indirect bandgap are also covered.